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This set of Geotechnical Engineering Multiple Choice Questions & Answers (MCQs) focuses on Geotechnical Engineering Set 2
Q1 | Which one of the following clays behaves like a dense sand?
- Over-consolidated clay with a high over-consolidation ratio
- Over-consolidated clay with a low over-consolidation ratio
- Normally consolidated clay
- Under-consolidated clay
Q2 | During seepage through a soil, direction of seepage is always
- Parallel to equipotential lines
- Perpendicular to stream lines
- Perpendicular to equipotential lines
- None of these
Q3 | The seepage force in a soil, is
- Perpendicular to the equipotential lines
- Proportional to the exit gradient
- Proportional to the head loss
- All the above
Q4 | Pick up the correct statement from the following:
- Coefficient of compressibility is the decrease in void ratio per unit increase of pressure
- The percent settlement at any time is called degree of consolidation
- Time factor is a dimensionless quantity
- All the above
Q5 | Direct measurement of permeability of the specimen at any stage of loading can be made
- Only in fixed ring type consolidometer
- Only in floating ring type consolidometer
- Both (A) and (B)
- None of the above
Q6 | The property of a soil which allows it to be deformed rapidly without rupture, elastic rebound and also a volume change, is known
- Porosity
- Plasticity
- Permeability
- Ductility
Q7 | Failure of the stability of slopes, generally occurs along
- Slip plane
- A horizontal surface
- A curved surface
- All the surfaces
Q8 | The shearing force acting along the slice of a curved surface of slippage, causes the soil to slide
- Down at the centre
- Down at the toe
- Upward at the centre
- None of these
Q9 | With the increase in the amount of compaction energy
- Optimum water content increases but maximum dry density decreases
- Optimum water content decreases but maximum dry density increases
- Both optimum water content and maximum dry density increase
- Both optimum water content and maximum dry density decrease
Q10 | Soils containing organic matters
- Are of spongy nature
- Swell with decrease of moisture
- Shrink with increase of moisture content
- None of these
Q11 | Buoyant unit weight equals the saturated density
- Multiplied by unit weight of water
- Divided by unit weight of water
- Plus unit weight of water
- Minus unit weight of water
Q12 | The change of moisture content of soils, changes the
- Value of the angle of repose
- Amount of compaction required
- Cohesive strength of soil
- All the above
Q13 | Skempton's pore pressure coefficient B for saturated soil is
- 1
- Zero
- Between 0 and 1
- Greater than 1
Q14 | The density of soil can be increased
- By reducing the space occupied by air
- By elastic compression of soil grains
- By expelling water from pores
- All the above
Q15 | Pick up the correct statement from the following:
- Kaolinite is most stable clay
- Kaolinite shows a very little sign of swelling on wetting
- Kaolinite is also called China clay
- All the above
Q16 | Pick up the correct definition from the following:
- The lateral pressure exerted by the soil when the retaining wall moves away from the back fill, is generally known as active earth pressure of the soil
- The lateral pressure exerted by the soil when the retaining wail moves towards the soil, is generally known as 'Passive earth pressure of the soil
- The lateral pressure exerted by the soil when the retaining wall has no movement relative to the back fill, is known as 'earth pressure at rest of the soil
- All the above
Q17 | Shear strength of a soil is a unique function of
- Effective stress only
- Total stress only
- Both effective stress and total stress
- None of the above
Q18 | 260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air bubbles was 1415 g and the weight of pycnometer filled with water alone was 1275 g. The moisture content in the soil is
- 24.20%
- 18.20%
- 53.80%
- None of these
Q19 | The angle that Coulomb's failure envelope makes with the horizontal is called
- Cohesion
- Angle of internal friction
- Angle of repose
- None of the above
Q20 | A flow net may be utilised for the determination of
- Exit gradient
- Seepage
- Hydrostatic pressure
- All the above
Q21 | The compression index of a soil
- Decreases with an increase in the liquid limit
- Increases with an increase in the liquid limit
- Decreases with an increase in the plastic limit
- Is not related with plastic limit
Q22 | If the coefficient of the active pressure Ka is 1/3, the coefficient of passive pressure Kp, is
- 03-Jan
- 03-Feb
- 1
- 3
Q23 | Sensitivity of a soil can be defined as
- Percentage of volume change of soil under saturated condition
- Ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
- Ratio of volume of voids to volume of solids
- None of the above
Q24 | The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3, is
- 4 t/m2
- 5 t/m2
- 6 t/m2
- 7 t/m2
Q25 | The soil moisture driven off by heat, is called
- Free water
- Hydroscopic water
- Gravity water
- None of these